CN109740520B - Fingerprint identification method and related equipment - Google Patents
Fingerprint identification method and related equipment Download PDFInfo
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- CN109740520B CN109740520B CN201811645283.XA CN201811645283A CN109740520B CN 109740520 B CN109740520 B CN 109740520B CN 201811645283 A CN201811645283 A CN 201811645283A CN 109740520 B CN109740520 B CN 109740520B
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Abstract
The application discloses fingerprint identification method and related equipment, is applied to the mobile terminal including touch screen and fingerprint sensor under the screen, the touch screen includes first region, first region is fingerprint collection area, fingerprint sensor can gather under the screen the signal in the first region, the mobile terminal stores two at least fingerprint template sets, and the method includes: when touch operation of a first hand pointer on the first area is detected, signals are collected through the under-screen fingerprint sensor, and a first fingerprint image is obtained through processing; during or after the fingerprinting process, determining a source of the first finger and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger; and performing fingerprint identification operation based on the first fingerprint image and the first fingerprint template set. By adopting the fingerprint identification method and device, the fingerprint identification speed can be improved.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a fingerprint identification method and related device.
Background
The principle is gathered to fingerprint under the screen and is utilized the light that the touch screen sent to shine the finger of putting on the touch screen, and the light that the touch screen sent takes place the reflection when reaching the finger, sets up the fingerprint sensor in the touch screen below and receives the light signal of reflection, because the uneven line of fingerprint, the light absorption range is different to obtain the fingerprint image of light and shade difference. Fingerprint identification is usually applied to fingerprint unlocking, fingerprint payment, fingerprint decryption and the like, and the application of the fingerprint identification is directly influenced by the fingerprint identification speed, so that the fingerprint identification speed is necessary to be improved.
Disclosure of Invention
The embodiment of the application provides a fingerprint identification method and related equipment, which are used for improving the fingerprint identification speed.
In a first aspect, an embodiment of the present application provides a fingerprint identification method, which is applied to a mobile terminal including a touch screen and an off-screen fingerprint sensor, where the touch screen includes a first area, the first area is a fingerprint acquisition area, the off-screen fingerprint sensor can acquire a signal in the first area, and at least two fingerprint template sets are stored in the mobile terminal, and the method includes:
when touch operation of a first hand pointer on the first area is detected, signals are collected through the under-screen fingerprint sensor, and a first fingerprint image is obtained through processing;
during or after the fingerprinting process, determining a source of the first finger and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
and performing fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
In a second aspect, an embodiment of the present application provides a fingerprint identification device, which is applied to a mobile terminal including a touch screen and a fingerprint sensor under the touch screen, where the touch screen includes a first area, the first area is a fingerprint acquisition area, the fingerprint sensor under the touch screen can acquire a signal in the first area, at least two fingerprint template sets are stored in the mobile terminal, and the device includes:
the fingerprint acquisition unit is used for acquiring signals through the under-screen fingerprint sensor and processing the signals to obtain a first fingerprint image when the touch operation of a first hand pointer on the first area is detected;
a template determination unit for determining a source of the first finger during or after the fingerprint acquisition process, and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
and the fingerprint identification unit is used for carrying out fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
In a third aspect, an embodiment of the present application provides a mobile terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps in the method according to the first aspect of the embodiment of the present application.
In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the method according to the first aspect of the present application.
In a fifth aspect, the present application provides a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps described in the method according to the first aspect of the present application. The computer program product may be a software installation package.
It can be seen that, in the embodiment of the application, at least two fingerprint template sets are stored in the mobile terminal, in the fingerprint identification process, the source of the finger is determined first, then the fingerprint template set for fingerprint identification is selected based on the source of the finger, and finally the selected fingerprint template set is used for fingerprint identification, so that the number of the fingerprint templates for fingerprint identification is reduced, the time required by fingerprint identification is reduced, and the fingerprint identification speed is increased.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1A is a schematic structural diagram of a mobile terminal according to an embodiment of the present application;
fig. 1B is a schematic diagram of a positional relationship between a first region and a second region according to an embodiment of the present disclosure;
FIG. 1C is a schematic diagram of a position relationship between an underscreen fingerprint sensor and a first region provided by an embodiment of the present application;
fig. 2A is a schematic flowchart of a fingerprint identification method according to an embodiment of the present application;
FIG. 2B is a diagram illustrating a method for identifying a source of a finger according to an embodiment of the present disclosure;
FIG. 2C is a schematic diagram of another embodiment of the present application for identifying a source of a finger;
FIG. 2D is a schematic diagram of another embodiment of the present application for identifying a source of a finger;
FIG. 2E is a schematic diagram of another embodiment of the present application for identifying a source of a finger;
FIG. 2F is a schematic diagram of another embodiment of the present application for identifying a source of a finger;
FIG. 3 is a schematic flowchart of another fingerprint identification method provided in the embodiments of the present application;
fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a fingerprint identification device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following are detailed below.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1A, fig. 1A is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure, where the mobile terminal includes a processor, a Memory, a signal processor, a communication interface, a touch screen, a speaker, a microphone, a Random Access Memory (RAM), a camera, a sensor, and the like.
The processor is the control center of the mobile terminal, connects each part of the whole mobile terminal by various interfaces and lines, and executes various functions and processes data of the mobile terminal by operating or executing software programs and/or modules stored in the memory and calling the data stored in the memory, thereby carrying out the overall monitoring of the mobile terminal.
The processor may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor.
The memory is used for storing software programs and/or modules, and the processor executes various functional applications and data processing of the mobile terminal by operating the software programs and/or modules stored in the memory. The memory mainly comprises a program storage area and a data storage area, wherein the program storage area can store an operating system, a software program required by at least one function and the like; the storage data area may store data created according to the use of the mobile terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The storage, the signal processor, the touch screen, the loudspeaker, the microphone, the RAM, the camera and the sensor are connected with the processor, and the communication interface is connected with the signal processor.
The Touch screen comprises a Touch screen display screen and a Touch Panel (TP), wherein the Touch screen comprises a first area, and the first area is a fingerprint acquisition area. The first area may be a region in the touch screen, that is, a large area with a size that can be pressed by a plurality of fingers simultaneously, or a small area that can be pressed by only a single finger. The position of the first area may be a middle area of the touch screen, an upper partial area of the touch screen, a lower partial area of the touch screen, and the like, which is not limited herein. The shape of the first region may be circular, square, oval, etc., and is not limited thereto. The touch screen further includes a second area, the second area is disposed around the first area, and an inner edge of the second area is connected to an outer edge of the first area, as shown in fig. 1B.
Wherein, the sensor comprises a fingerprint sensor, an infrared sensor, a gyroscope and the like under the screen. This fingerprint sensor under screen locates the below (as shown in fig. 1C) in first region, and this fingerprint sensor under screen can gather the signal in the first region, and this fingerprint sensor under screen can be optical fingerprint sensor under the screen, also can be capacitanc fingerprint sensor under the screen, also can be ultrasonic wave fingerprint sensor under the screen, does not limit here. When the under-screen fingerprint sensor is the under-screen optical fingerprint sensor, the signal acquired by the under-screen fingerprint sensor is an optical signal.
Mobile terminals may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal Equipment (terminal device), and the like, having wireless communication capabilities.
The following describes embodiments of the present application in detail.
Referring to fig. 2A, fig. 2A is a schematic flowchart of a fingerprint identification method provided in an embodiment of the present application, and is applied to the mobile terminal, where at least two fingerprint template sets are stored in the mobile terminal, the method includes:
step 201: when the touch operation of the first hand pointer on the first area is detected, the mobile terminal collects signals through the fingerprint sensor under the screen and processes the signals to obtain a first fingerprint image.
The fingerprint template set includes, for example, a left-hand fingerprint template set, a right-hand fingerprint template set, a child fingerprint template set, an adult fingerprint template set, a child left-hand fingerprint template set, a child right-hand fingerprint template set, an adult left-hand fingerprint template set, an adult right-hand fingerprint template set, and the like.
The touch operation is, for example, a pressing operation, a clicking operation, a sliding operation, and the like.
Wherein, under the condition that the signal that fingerprint sensor gathered under the screen is light signal, mobile terminal gathers the signal through fingerprint sensor under the screen, and the concrete implementation who handles and obtain first fingerprint image has: the mobile terminal collects optical signals through the fingerprint sensor under the screen, processes the optical signals to obtain an image, and then performs image processing on the image to obtain a first fingerprint image in the image.
Step 202: during or after the fingerprint acquisition process, the mobile terminal determines the source of the first finger and determines a first fingerprint template set for fingerprint identification based on the source of the first finger.
The source of the first finger is, for example, left hand, right hand, child, adult, left hand of child, right hand of child, left hand of adult, right hand of adult, etc.
The specific implementation manner of the mobile terminal determining the first fingerprint template set for fingerprint identification based on the source of the first finger is as follows: the mobile terminal determines a first fingerprint template set for fingerprint identification corresponding to a source of a first finger based on a mapping relation between the source of the finger and the fingerprint template set, wherein the mapping relation between the source of the finger and the fingerprint template set is shown in table 1.
TABLE 1
| Source of fingers | Fingerprint template set |
| Left hand | Left hand fingerprint template set |
| Right hand | Right finger print template set |
| Children's toy | Children fingerprint template set |
| Adult | Adult fingerprint template set |
| …… | …… |
Step 203: and the mobile terminal performs fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
The specific implementation manner of the mobile terminal performing the fingerprint identification operation based on the first fingerprint image and the first fingerprint template set is as follows: the mobile terminal arranges all the fingerprint templates in the first fingerprint template set according to the sequence of the matching success times; and the mobile terminal compares the first fingerprint image with the fingerprint templates in the first fingerprint template set one by one according to the arranged sequence. Therefore, the fingerprint templates with high matching times are compared first, so that the time required by fingerprint identification can be further shortened.
Specifically, only one fingerprint template library is usually stored in the current mobile terminal, and in the fingerprint identification process, fingerprints in the fingerprint template library are compared one by one, which results in a long time required for fingerprint identification.
In the embodiment of the application, at least two fingerprint template sets are stored in the mobile terminal, in the fingerprint identification process, the source of the finger is determined firstly, then the fingerprint template set used for fingerprint identification is selected based on the source of the finger, and finally the selected fingerprint template set is used for fingerprint identification, so that the number of the fingerprint templates used for fingerprint identification is reduced, the time required by fingerprint identification is reduced, and the fingerprint identification speed is improved. In addition, the source of the finger is determined in the process of fingerprint acquisition, and the fingerprint identification speed is further improved.
In an implementation manner of the present application, specific embodiments of the mobile terminal determining the source of the first finger include: the mobile terminal determines a first touch position where the first finger touches the second area when touching the first area, and determines a source of the first finger based on the first touch position, wherein the source of the first finger comprises a left hand or a right hand.
The specific implementation manner of the mobile terminal determining that the first finger touches the first touch position of the second area when the first finger touches the first area includes: the mobile terminal obtains a first touch signal of a second area, and determines a first touch position of the second area touched by the first finger when the first finger touches the first area according to the first touch signal.
The specific implementation manner of the mobile terminal determining the source of the first finger based on the first touch position is as follows: the mobile terminal determines a finger source corresponding to the first touch position according to a mapping relationship between the position of the second area and the finger source, and uses the finger source corresponding to the first touch position as the source of the first finger, where the mapping relationship between the touch position of the second area and the finger source is shown in table 2, when the center points of the first area and the second area are located on the screen centerline, the area a is located on the left side of the screen centerline, the area B is located on the right side of the screen centerline, the two side edges of the area a and the area B are abutted to the screen centerline, and the screen centerline may be a vertical center or a horizontal center of the screen, as shown in fig. 2B specifically.
TABLE 2
| Position of the second region | Source of fingers |
| Region A | Left hand |
| Region B | Right hand |
For example, as shown in fig. 2B, when a finger presses the first area to perform an on-screen fingerprint entry and recognition operation, as shown in fig. 2B, the finger covers the first area and a portion of the second area, which causes a signal change of TP detection, so that the touch position of the second area covered by the finger can be known, and finally the finger is known as the finger of the left hand.
It can be seen that, in the embodiment of the application, whether the finger touching the first area is a left-hand finger or a right-hand finger is determined by the second area surrounding the first area, the determination mode is simple, the determination speed of the finger source is increased, and the fingerprint identification speed is further increased.
In an implementation manner of the present application, specific embodiments of the mobile terminal determining the source of the first finger include: the mobile terminal determines a touch direction of the first finger touching the first area, and determines a source of the first finger based on the touch direction, wherein the source of the first finger comprises a left hand or a right hand.
The specific implementation manner of the mobile terminal determining that the first finger touches the touch direction of the first area includes: the mobile terminal acquires a second touch signal of a first area and determines a second touch position of the first area touched by the first finger according to the second touch signal; and determining an included angle between the second touch position and the horizontal direction, and using the determined included angle as the touch direction of the first finger for touching the first area.
For example, as shown in fig. 2C, when a finger presses the first area to perform an on-screen fingerprint entry and recognition operation, as shown in fig. 2C, the finger covers a portion of the first area, which causes a signal change of TP detection, so that the touch position of the first area covered by the finger can be known.
The specific implementation manner of the mobile terminal determining the source of the first finger based on the touch direction is as follows: the mobile terminal determines a finger source corresponding to the touch direction based on a mapping relation between the touch direction and the finger source, and takes the finger source corresponding to the touch direction as the source of the first finger. The mapping relationship between the touch direction and the finger source is shown in table 3.
TABLE 3
| Touch pointing | Source of fingers |
| 0 to 90 degrees, 270 to 360 degrees | Left hand |
| 90 to 180 degrees and 180 to 270 degrees | Right hand |
It can be seen that, in the embodiment of the application, whether the finger is a left-hand finger or a right-hand finger is determined through the touch direction of the finger touching the first area, the determination mode is simple, the determination speed of the finger source is increased, and the fingerprint identification speed is further increased.
In an implementation manner of the present application, before the detecting the touch operation of the first hand pointer on the first area, the method further includes:
the mobile terminal displays at least two input frames in the first area, wherein the input frames are used for indicating that fingerprints are input in the input frames, and each input frame corresponds to a finger source;
the mobile terminal determines the source of the first finger, and the method comprises the following steps: determining a second touch position where the first finger touches the first area; determining a corresponding target input frame based on the second touch position; taking a finger source corresponding to the target entry frame as a source of the first finger, wherein the source of the first finger comprises at least one of the following: children, adults, left and right hands.
For example, as shown in fig. 2D, two input frames are displayed in the first area, one input frame corresponds to a left hand, and the other input frame corresponds to a right hand, and when a finger presses the input frame corresponding to the right hand to perform the input and recognition actions of the finger print under the screen, the finger is determined to be the finger of the right hand.
For another example, as shown in fig. 2E, two input boxes are first displayed in the first area, one input box corresponds to a child, the other input box corresponds to an adult, and when a finger presses the input box corresponding to the adult to perform the input and recognition actions of the finger print under the screen, the finger is determined to be an adult finger.
For another example, as shown in fig. 2F, four input frames are displayed in the first area, one input frame corresponds to the left hand of the child, one input frame corresponds to the right hand of the child, one input frame corresponds to the left hand of the adult, and one input frame corresponds to the right hand of the adult.
It can be seen that, in the embodiment of the application, the entry frame is displayed in the first area, and then the source of the finger is directly judged through the entry frame touched by the finger, so that the determining speed of the source of the finger is increased, and the fingerprint identification speed is further increased.
In an implementation manner of the present application, the determining, by the mobile terminal, the source of the first finger includes: the mobile terminal analyzes the first fingerprint image to obtain a plurality of fingerprint characteristics, and determines the source of the first finger based on the fingerprint characteristics, wherein the source of the first finger comprises children or adults.
The mobile terminal analyzes the first fingerprint image to obtain a plurality of fingerprint features, and the method comprises the following steps: the mobile terminal performs first preprocessing on the first fingerprint image to obtain a target fingerprint image, wherein the first preprocessing comprises at least one of the following steps: matting, adjusting light sensitivity and removing noise; the mobile terminal carries out algorithm end preprocessing on the target fingerprint image to obtain a plurality of fingerprint characteristics, and the algorithm end preprocessing comprises at least one of the following steps: extracting contrast, extracting and processing feature points.
The plurality of fingerprint features comprise a plurality of ridges, a plurality of valleys and ridge distances between each ridge and its adjacent valley, and the specific implementation manner of the mobile terminal for determining the source of the first finger based on the plurality of fingerprint features is as follows: the mobile terminal determines an average streak line distance; when the average line distance is smaller than a preset line distance, the mobile terminal determines that the source of the first finger is a child; and if the average ridge distance is greater than or equal to the preset ridge distance, the mobile terminal determines that the source of the first finger is an adult.
Wherein, the ridge line distance refers to a distance from the center of the ridge line to the center of the valley line adjacent to the ridge line.
The specific implementation manner of the mobile terminal determining the average fringe distance is as follows: the mobile terminal obtains the ridge line distance between each ridge line and the valley line adjacent to the ridge line, and then determines the average ridge line distance based on the obtained ridge line distance. For example, if 30 line distances are acquired, then the average line distance is equal to the sum of the 30 line distances divided by 30.
The ridge line distance between one ridge line and the valley line adjacent to the ridge line is determined in the following mode: the mobile terminal determines a first pixel point corresponding to the center of the ridge line and a second pixel point corresponding to the center of the valley line adjacent to the ridge line; and taking the distance between the first pixel point and the second pixel point as the ridge line distance between the ridge line and the valley line adjacent to the ridge line.
It should be noted that, please refer to the above description for the specific way of the ridge line distance between the other ridge line and the valley line adjacent to the other ridge line, which is not described herein.
And the preset streak line distance is set by the mobile terminal based on empirical parameters.
The plurality of fingerprint features comprise a plurality of ridges, a plurality of valleys and a ridge depth between each ridge and a valley adjacent to the ridge, and the specific implementation manner of the mobile terminal for determining the source of the first finger based on the plurality of fingerprint features is as follows: the mobile terminal determines the average streak line depth; when the average line depth is smaller than a preset line depth, the mobile terminal determines that the source of the first finger is a child; and when the average streak line depth is greater than or equal to the preset streak line depth, the mobile terminal determines that the source of the first finger is an adult.
The ridge depth is a distance from a highest point of the ridge to a lowest point of the valley adjacent to the ridge.
The specific implementation manner of the mobile terminal determining the average streak line depth is as follows: the mobile terminal obtains the ridge depth between each ridge line and the valley line adjacent to the ridge line, and then determines the average ridge line distance based on the obtained ridge line depth. For example, 30 streak depths are acquired, and then the average streak depth is equal to the sum of these 30 streak depths divided by 30.
The ridge depth determination mode between one ridge line and the valley line adjacent to the ridge line is as follows: the mobile terminal determines a third pixel point corresponding to the highest point of the ridge line and a fourth pixel point corresponding to the lowest point of the valley line adjacent to the ridge line; determining a first capacitance value variation corresponding to the third pixel point and a second capacitance value variation corresponding to the third pixel point; determining a difference between the first capacitance value variation and the second capacitance value variation; and determining the streak depth corresponding to the difference value based on the mapping relation between the capacitance value variation and the streak depth.
It should be noted that, for the specific way of the ridge depth between the other ridge line and the valley line adjacent to the other ridge line, please refer to the above description, and it is not described here.
And the preset streak line depth is set by the mobile terminal based on empirical parameters.
It can be seen that in the embodiment of the application, the source of the fingerprint is determined through the acquired fingerprint image, the operation is convenient, and the intelligence of the mobile terminal is improved.
In an implementation manner of the present application, before the detecting the touch operation of the finger on the first area, the method further includes:
when the touch operation of a second hand pointer on the first area is detected, the mobile terminal acquires signals through the under-screen fingerprint sensor and processes the signals to obtain a second fingerprint image; during or after the fingerprint acquisition process, the mobile terminal determines the source of the second finger; and the mobile terminal adds the second finger image into a second finger template set corresponding to the source of the second finger.
It should be noted that the manner of determining the source of the second finger is the same as the manner of determining the source of the first finger, and will not be described here.
In an implementation manner of the present application, after performing the fingerprint identification operation based on the first fingerprint image and the first fingerprint template set, the method further includes:
after the fingerprint identification is successful, the mobile terminal carries out fingerprint unlocking operation and enables a use mode corresponding to the source of the first finger.
Specifically, the enabling of the usage mode corresponding to the source of the first finger includes: enabling a child use mode when the source of the first finger is a child; enabling an adult use mode when the source of the first finger is an adult; when the source of the first finger is the left hand, starting a left-hand use mode; enabling a right-hand use mode when the source of the first finger is the right hand; when the source of the first finger is the right hand of the child, starting a right hand use mode of the child; when the source of the first finger is the left hand of the child, starting a left-hand use mode of the child; enabling an adult right-hand use mode when the source of the first finger is an adult right hand; when the source of the first finger is an adult left hand, the adult left hand usage mode is enabled.
It can be seen that, in the embodiment of the application, after the fingerprint unlocking is completed, the corresponding use mode is enabled based on the source of the finger, and the use convenience of the mobile terminal is improved.
Referring to fig. 3, fig. 3 is a schematic flowchart of another fingerprint identification method provided in the embodiment of the present application, and the method is applied to the mobile terminal, where at least two fingerprint template sets are stored in the mobile terminal, and the method includes:
step 301: when the touch operation of the second hand pointer on the first area is detected, the mobile terminal acquires signals through the under-screen fingerprint sensor and processes the signals to obtain a second fingerprint image.
Step 302: and during or after the fingerprint acquisition process, the mobile terminal determines the source of the second finger.
Step 303: and the mobile terminal adds the second finger image into a second finger template set corresponding to the source of the second finger.
Step 304: when the touch operation of a first hand pointer on the first area is detected, the mobile terminal acquires signals through the under-screen fingerprint sensor and processes the signals to obtain a first fingerprint image.
Step 305: during or after the fingerprint acquisition process, the mobile terminal determines the source of the first finger and determines a first fingerprint template set for fingerprint identification based on the source of the first finger.
Step 306: and the mobile terminal performs fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
Step 307: after the fingerprint identification is successful, the mobile terminal carries out fingerprint unlocking operation and enables a use mode corresponding to the source of the first finger.
It should be noted that, for the specific implementation process of the present embodiment, reference may be made to the specific implementation process described in the above method embodiment, and a description thereof is omitted here.
Consistent with the embodiments shown in fig. 2A and fig. 3, please refer to fig. 4, and fig. 4 is a schematic structural diagram of another mobile terminal provided in the embodiments of the present application, as shown, the mobile terminal includes a touch screen under-screen fingerprint sensor, the touch screen includes a first area, the first area is a fingerprint acquisition area, the under-screen fingerprint sensor is capable of acquiring signals in the first area, at least two fingerprint template sets are stored in the mobile terminal, the mobile terminal further includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for performing the following steps:
when touch operation of a first hand pointer on the first area is detected, signals are collected through the under-screen fingerprint sensor, and a first fingerprint image is obtained through processing;
during or after the fingerprinting process, determining a source of the first finger and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
and performing fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
In an implementation manner of the present application, the touch screen further includes a second area, the second area is disposed around the first area, an inner edge of the second area is connected to an outer edge of the first area, and in terms of determining a source of the first finger, the program includes instructions for performing the following steps:
determining a first touch position where the first finger touches the second area when touching the first area, and determining a source of the first finger based on the first touch position, the source of the first finger including a left hand or a right hand.
In one implementation of the present application, in determining the origin of the first finger, the program includes instructions for:
determining a touch orientation at which the first finger touches the first area, and determining a source of the first finger based on the touch orientation, the source of the first finger including a left hand or a right hand.
In an implementation manner of the present application, before detecting a touch operation of a first hand pointer on the first area, the program includes instructions further for:
displaying at least two input boxes in the first area, wherein the input boxes are used for indicating that fingerprints are input in the input boxes, and each input box corresponds to a finger source;
in determining the origin of the first finger, the program comprises instructions for: determining a second touch position where the first finger touches the first area; determining a corresponding target input frame based on the second touch position; taking a finger source corresponding to the target entry frame as a source of the first finger, wherein the source of the first finger comprises at least one of the following: children, adults, left and right hands.
In one implementation of the present application, in determining the origin of the first finger, the program includes instructions for:
the method includes parsing the first fingerprint image to obtain a plurality of fingerprint features, and determining a source of the first finger based on the plurality of fingerprint features, the source of the first finger including a child or an adult.
In an implementation manner of the present application, before detecting a touch operation of a first hand pointer on the first area, the program includes instructions further for:
when the touch operation of a second hand pointer on the first area is detected, acquiring signals through the under-screen fingerprint sensor, and processing to obtain a second fingerprint image;
determining the source of the second finger during or after the fingerprint acquisition process;
and adding the second finger image into a second finger template set corresponding to the source of the second finger.
In an implementation manner of the present application, after performing a fingerprint identification operation based on the first fingerprint image and the first fingerprint template set, the program includes instructions for further performing the following steps:
after the fingerprint identification is successful, performing fingerprint unlocking operation, and enabling a use mode corresponding to the source of the first finger.
It should be noted that, for the specific implementation process of the present embodiment, reference may be made to the specific implementation process described in the above method embodiment, and a description thereof is omitted here.
The above embodiments mainly introduce the scheme of the embodiments of the present application from the perspective of the method-side implementation process. It is understood that the mobile terminal includes hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the mobile terminal may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
The following is an embodiment of the apparatus of the present application, which is used to execute the method implemented by the embodiment of the method of the present application. Referring to fig. 5, fig. 5 is a fingerprint identification device provided in an embodiment of the present application, which is applied to a mobile terminal including a touch screen and an off-screen fingerprint sensor, where the touch screen includes a first area, the first area is a fingerprint acquisition area, the off-screen fingerprint sensor is capable of acquiring a signal in the first area, at least two fingerprint template sets are stored in the mobile terminal, and the fingerprint identification device includes:
the fingerprint acquisition unit 501 is configured to acquire a signal through the under-screen fingerprint sensor when a touch operation of a first hand pointer on the first area is detected, and process the signal to obtain a first fingerprint image;
a template determination unit 502 for determining a source of the first finger during or after the fingerprinting process, and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
a fingerprint identification unit 503, configured to perform a fingerprint identification operation based on the first fingerprint image and the first fingerprint template set.
In an implementation manner of the present application, the touch screen further includes a second area, the second area is disposed around the first area, an inner edge of the second area is connected to an outer edge of the first area, and in terms of determining a source of the first finger, the template determining unit 502 is specifically configured to:
determining a first touch position where the first finger touches the second area when touching the first area, and determining a source of the first finger based on the first touch position, the source of the first finger including a left hand or a right hand.
In an implementation manner of the present application, in determining the source of the first finger, the template determining unit 502 is specifically configured to:
determining a touch orientation at which the first finger touches the first area, and determining a source of the first finger based on the touch orientation, the source of the first finger including a left hand or a right hand.
In an implementation manner of the present application, the fingerprint identification apparatus further includes:
the screen control unit 504 is configured to display at least two entry boxes in the first area before detecting a touch operation of a first hand pointer on the first area, where the entry boxes are used to indicate that a fingerprint is entered therein, and each entry box corresponds to a finger source;
in respect of determining the source of the first finger, the template determining unit 502 is specifically configured to: determining a second touch position where the first finger touches the first area; determining a corresponding target input frame based on the second touch position; taking a finger source corresponding to the target entry frame as a source of the first finger, wherein the source of the first finger comprises at least one of the following: children, adults, left and right hands.
In an implementation manner of the present application, in determining the source of the first finger, the template determining unit 502 is specifically configured to:
the method includes parsing the first fingerprint image to obtain a plurality of fingerprint features, and determining a source of the first finger based on the plurality of fingerprint features, the source of the first finger including a child or an adult.
In an implementation manner of the present application, before detecting a touch operation of a finger on the first area, the fingerprint acquisition unit 501 is further configured to acquire a signal through the under-screen fingerprint sensor when detecting a touch operation of a second finger on the first area, and process the signal to obtain a second fingerprint image;
a template determining unit 502, further configured to determine a source of the second finger during or after the fingerprint acquisition process;
the fingerprint identification device further comprises:
and a fingerprint entering unit 505, configured to add the second fingerprint image to a second fingerprint template set corresponding to a source of the second finger.
In an implementation manner of the present application, after performing a fingerprint identification operation based on the first fingerprint image and the first fingerprint template set, the fingerprint identification apparatus further includes:
an unlocking unit 506, configured to perform a fingerprint unlocking operation after the fingerprint identification is successful;
a mode enabling unit 507 for enabling a usage mode corresponding to a source of the first finger.
It should be noted that the fingerprint acquisition unit 501, the template determination unit 502, the fingerprint identification unit 503, the screen control unit 504, the fingerprint entry unit 505, the unlocking unit 506, and the mode enabling unit 507 may be implemented by a processor.
Embodiments of the present application further provide a computer storage medium, where the computer storage medium stores a computer program, the computer program is executed by a processor to perform part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes a mobile terminal.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising a mobile terminal.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A fingerprint identification method is applied to a mobile terminal comprising a touch screen and an off-screen fingerprint sensor, wherein the touch screen comprises a first area, the first area is a fingerprint acquisition area, the off-screen fingerprint sensor can acquire signals in the first area, at least two fingerprint template sets are stored in the mobile terminal, and the method comprises the following steps:
when touch operation of a first hand pointer on the first area is detected, signals are collected through the under-screen fingerprint sensor, and a first fingerprint image is obtained through processing;
during or after the fingerprinting process, determining a source of the first finger and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
performing a fingerprint identification operation based on the first fingerprint image and the first fingerprint template set;
wherein, the touch screen further includes a second area, the second area is arranged around the first area, the inner edge of the second area is connected with the outer edge of the first area, and the determining the source of the first finger includes:
determining a first touch position where the first finger touches the second area when touching the first area, and determining a source of the first finger based on the first touch position, the source of the first finger including a left hand or a right hand.
2. The method of claim 1, wherein the determining the source of the first finger further comprises:
determining a touch orientation at which the first finger touches the first area, and determining a source of the first finger based on the touch orientation, the source of the first finger including a left hand or a right hand.
3. The method according to claim 1, wherein before the detecting the touch operation of the first hand pointer on the first area, the method further comprises:
displaying at least two input boxes in the first area, wherein the input boxes are used for indicating that fingerprints are input in the input boxes, and each input box corresponds to a finger source;
the determining the source of the first finger comprises: determining a second touch position where the first finger touches the first area; determining a corresponding target input frame based on the second touch position; taking a finger source corresponding to the target entry frame as a source of the first finger, wherein the source of the first finger comprises at least one of the following: children, adults, left and right hands.
4. The method of claim 1, wherein the determining the source of the first finger further comprises:
the method includes parsing the first fingerprint image to obtain a plurality of fingerprint features, and determining a source of the first finger based on the plurality of fingerprint features, the source of the first finger including a child or an adult.
5. The method according to any one of claims 1-4, wherein before the detecting the touch operation of the finger on the first area, the method further comprises:
when the touch operation of a second hand pointer on the first area is detected, acquiring signals through the under-screen fingerprint sensor, and processing to obtain a second fingerprint image;
determining the source of the second finger during or after the fingerprint acquisition process;
and adding the second finger image into a second finger template set corresponding to the source of the second finger.
6. The method of any of claims 1-4, wherein after performing the fingerprinting operation based on the first fingerprint image and the first set of fingerprint templates, the method further comprises:
after the fingerprint identification is successful, performing fingerprint unlocking operation, and enabling a use mode corresponding to the source of the first finger.
7. The utility model provides a fingerprint identification device which characterized in that is applied to the mobile terminal who includes touch-control screen and fingerprint sensor under the screen, the touch-control screen includes first region, first region is fingerprint acquisition area, fingerprint sensor can gather under the screen signal in the first region, the storage has two at least fingerprint template sets in the mobile terminal, the device includes:
the fingerprint acquisition unit is used for acquiring signals through the under-screen fingerprint sensor and processing the signals to obtain a first fingerprint image when the touch operation of a first hand pointer on the first area is detected;
a template determination unit for determining a source of the first finger during or after the fingerprint acquisition process, and determining a first set of fingerprint templates for fingerprint identification based on the source of the first finger;
a fingerprint identification unit, configured to perform a fingerprint identification operation based on the first fingerprint image and the first fingerprint template set;
the touch screen further includes a second area, the second area is disposed around the first area, an inner edge of the second area is connected to an outer edge of the first area, and the template determining unit determines a source of the first finger, including:
determining a first touch position where the first finger touches the second area when touching the first area, and determining a source of the first finger based on the first touch position, the source of the first finger including a left hand or a right hand.
8. A mobile terminal, characterized in that the mobile terminal comprises a touch screen comprising a fingerprint acquisition area, a processor and a fingerprint sensor provided below the fingerprint acquisition area, the mobile terminal further comprising a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for carrying out the steps of the method according to any one of claims 1-6.
9. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-6.
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| CN112395925B (en) * | 2019-08-19 | 2024-03-26 | 深圳富泰宏精密工业有限公司 | Under-screen fingerprint registration method and electronic device |
| CN114078258A (en) * | 2020-07-31 | 2022-02-22 | 华为技术有限公司 | Image matching method applied to fingerprint identification and related device |
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